# SDR 2007UALA04792

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 23, 2007
- Submitted: November 27, 2007
- Operation: Air carrier
- Aircraft: N540UA
- Make and model: Boeing 757222
- Aircraft serial: 25252
- Aircraft time: 54,617 hours, 20,002 cycles
- Engine: Pwa PW2037
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Liner
- Condition: Cracked
- Location: Nr 1 Engine
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2007UALA04792

## Discrepancy

RTFL DUE TO NR 1 ENGINE HIGH OIL TEMPERATURE INDICATIONS.  BOROSCOPE SHOWS A CRACK IN THE CRACK OF INNER LINER NR 4 PANEL.  AIR/OIL HEAT EXCHANGER ALSO BELIEVED TO BE FAULTY.  REMOVED ENGINE AND REPLACED WITH A NEW ENGINE.  ENG 726661 SENT TO SHOP FOR OVERHAUL.

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